Dear sir... I found error message. i was occurrence debug error message. why do error messag make? what is cause and effect? and what is solve method? i don't know... why do it occurrence?... you 'll know.. please , tell me. about "yaffs: Allocation block xx was not highest sequence "" please... you'll send E-maill to me. I wish ... thank you..... Have a good time.... sir [source code contens] In yaffs_guts.c at function : static int yaffs_ScanBackwards(yaffs_Device * dev) version Info : const char *yaffs_guts_c_version = "$Id: yaffs_guts.c,v 1.31 2006/03/08 07:59:20 charles Exp $"; /* Yaffs2 sanity check: * This should be the one with the highest sequence number */ if (dev->isYaffs2 && (dev->sequenceNumber != bi->sequenceNumber)) { T(YAFFS_TRACE_ALWAYS, (TSTR ("yaffs: Allocation block %d was not highest sequence " "id: block seq = %d, dev seq = %d" TENDSTR), blk, bi->sequenceNumber, dev->sequenceNumber)); }